Concentrator



J. TULL'OCH. GONGENTRATOR (No Model.)

No. 471,319. Patented Maxn22, 1892.

, bles have heretofore described by reason of UNITED STATES PATENT FF1CE.

JAMES TULLOCH, OF ANGELS OAMP, CALIFORNIA.

CONCENTRATOR.

SPECIFICATION forming part of Letters Patent No. 471,319, dated March 22, 1892.

Application fi1ed August 12, 1891.

T0 aZZ whom it mar/y concern- Be it known that I, J AMES TULLOCH, a citizen of the United States, residing at Angels Oamp, Calaveras county, State of California, have invented an Improvement in Concentrators; and I hereby deelare thefollowing to be afull, elear, and exact description of the same.

My invention relates to thai; class of oreconcen trators in which s employed an endless traveling belt or table mounted at an inclination upon a sui'cable swnging frame, the orepulp With water being fed upon the belt 01' tab1e, whereby the lighter and worthless particles are washed down with che stream to the lower end, while the heavier and preeious particles clinging to the surface are carried upwardly and are washed off in a suitable tank be1ow.

My invention consists in certain imprevements in this class of concentrators. These improvements eonsist in suspending the endless travelin g beh; 01 table from above by suitable swinging connections and in imparting to said beh; or table a reciprocating movement, whereby its surface describes a concave are; also, in a novel means, hereinafter deseribed, of suspendin g said belt 01 table also, in a novel mechanism for eflecting what is known as the uphill travel of said belt or table;

The mprovements will be hereinafter fully described, and specifically pointed out in the claims.

The prime object of my invention is to so arrange the endless belt or table that every point in its surface may describe a concave are in swinging 00 and fro in contradis'ninction to the convex are which said belts 01 tabeing mo unted upon yielding standards be- 10W. This motion is advantageous in better spreading the material over the surface of the belt and in keeping it worked awayfrom the sdes thereof and toward the center, resulting in a more perfeet eoncentration.

Another object is to provide a simple and eieetive means of imparting an uphill travel 110 the belt or table.

Referring to che aceompanying drawings for a more complete explanation of my invention,Figure 1 is a perspective view of myore -coneentrator.

Serial No, 402,474. (No model.)

Figs. 2 and 3 show modifications in the means of suspendng the shaking belt-carrying frame.

A is the bed-plate 01: my concentrator,from whieh the standards B rise, said standards being; provided With top bars b.

0 is the shaking frame of the machine, baving a head-drum c, a tail-drum 0', and intervening supporting rollers 0 Upon these drums and rollers is mounted and adapted to trave1 the endless belt or tabie D, made of any suitable material-eanvas, 'rubber, blanket, 01 other material usually employed in this class of machines.

E is a washing-tank under the head of the belt. The frame 0 is mounted al: an inclination, so that the belt is likewise inclined,and has an uphill trave], as indicated by the arrow.

My first improvement in this elass of maehines consists in suspending the belt or t-able from above bya swnging connection,so that in reciprocating 01 shaking it every point in iis surface sha1l deseribe a cono-ave are.

Variousdevices may be employed to effect the proper suspension of the belt or table from above. Thus, as shown in Fig. 2, it may be suspended by means of four or more pivot- I prefer, and which are shown in Fig. 1, consist of inclined arms I, seeured at each side of the frame C near each end thereof, and said arms extending upwardly to and. under the middles of the top bars b, 130 which they are freely hung by means of a link-19011; or j ointed rod lor other means in che centers of the top bars, so that the be1t or tab1e is suspended centrally from above. All of these means provide for a swinging of the belt 01 table through a concave are.

Any suitable means may be employed bo eft'ect che vibration of the table, and I have bere shown for this purpose the crank-shaft K and conneetng-lnks k. Now it Will be soen that byrotatng the crank-shaft the be1t 01 table is vibrated about ts point.s 0E support above and every poin; in its surface descrbes a concave are, resultng in spreadng the matera1 upon the surface of the be1t 01 tabe more genemIlyand equally and in keeping it from packng upon che sides, directing t 1:ow:ud the cente1;

In order toefect the uphill travel of the belt, I have mounted 011 the end of the shaf; L of the heacI-drnm 0 {L m'tchet M.

Connected Wth che base frame 01 late A by a hnge 01 10059 joint s m1 aetuntingqmwl N, directetl bya sutable guide O,aw having its upper end adzmpted to engage che teeth of the ratchet M. 'lhis paw1 nmy be a grawiby one, or to insure its perfect acton may have {L spring P behind in, holding t' positively to its engagement. Now'as the table swings towm-d the pmvl the 1atchet is brought into coutzmt :Lt ench return stroke With the pawl, and as sud ratchet swings through its upward move ment it is turned 'one tooth at a time by its engagement With the pmv. This e11 gagement of pmv1 m1d 1atchet and the divect connecton of the latter W1 the shaft of the head-drum nmkes a smpler devic'e Lhzu1 those shown in my prevous patents, No. 4LI2, L3I, dated Oc tober 8, 1889, m1& No. 443,171, dated December 1890.

;Iaving thns descrbed my invention, what I claim as new, and desire to secu re' by Letters Patent is-- 1. In 111 ore-concentrato),the beIt-carryng franw, the endless traveling beh; mounted thereon, and connections f01 vbmting sad Emme m1(1 belt,n combinaton With upwardlyextendng arms connected at their lower ends with the beIt-carryng frame and freely conneeed at t-heir upper ends to stationm-y bars m: ponts in the longtudinal center of the bel t, substan ta1ly as heren descrbed.

9. In an ore-concentrator, the combnation of the bed-plate, the standards With top bars, the belt-carrying frame, che endless beh; thercon, the :mns secmed to sac1 belt-cavrying f rame, the swngng connections between the npper euds of sad arms and the mddles of the cross-bms, tl1e crzmk-shaft, zmd the links connectng said cnmk-shaft With the belt-carryng Emme, substantially as herein descrbed. In witness whereof I lmve hereunto set my lmnd.

JAMES TULLOUII. Witnosses:

.OHN B. \IEYERS, JACO'B ASIER. 

